# SDR ASAA2022022637789

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2022
- Submitted: March 30, 2022
- Operation: Air carrier
- Aircraft: [N292AK](https://openairdocs.org/aircraft/N292AK), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 64301
- Aircraft time: 11,604 hours, 3,646 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Inoperative
- Location: Cabin
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022022637789

## Discrepancy

EMERGENCY LIGHT BATTERY PACK M1673 DOES NOT PASS A CAPACITY FUNCTIONAL CHECK. (AFTER A DEEP CYCLE). GROUNDED - YES. REMOVED AND REPLACED M1673 EMERGENCY BATTERY PACK AND PERFORMED A GOOD M1673 BATTER EMERGENCY INSTALLATION TEST PER B737-900 AMM 33-51-06-960-805 STEP 4.

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